diff --git a/core/tests/Drupal/Tests/Core/Error/DrupalLogErrorTest.php b/core/tests/Drupal/Tests/Core/Error/DrupalLogErrorTest.php
index 4bd3e8bbab4f10079a30ccda9600e0d4dffe772a..1957beb81db65ab4edb7b483d1d04289dbbdaeec 100644
--- a/core/tests/Drupal/Tests/Core/Error/DrupalLogErrorTest.php
+++ b/core/tests/Drupal/Tests/Core/Error/DrupalLogErrorTest.php
@@ -32,7 +32,7 @@ public function testFatalExitCode(string $script, string $output, string $errorO
     $this->assertSame($processIsSuccessful, $process->isSuccessful());
   }
 
-  public function provideFatalExitCodeData(): array {
+  public static function provideFatalExitCodeData(): array {
     $verbose = "\$GLOBALS['config']['system.logging']['error_level'] = 'verbose';";
     $scriptBody = self::getScriptBody();
     $data['normal'] = [